In order to improve the radiation bandwidth of the Fabry-Perot Cavity(FPC)antenna,a new approach has been proposed,namely employing a tapered corrugation structure on the ground plane.To verify the proposed method,a wideband high-gain FPC antenna is designed.By introducing the corrugation structure,the height of the cavity can be gradually reduced.In this way,the phase of the radiation field can be compensated,which leads to a well-distributed radiation aperture.Therefore,the 3dB gain bandwidth can be enhan...
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